name | Amanita grossa sensu Aberdeen |
name status | sensu |
intro | This mushroom is known only from a single collection and the associated field notes. The following is based on (Bas 1969). |
cap | The cap of Amanita grossa sensu Aberdeen is 140 mm wide, dingy cream, and flattened; the margin may be slightly curled upward in mature specimens. The flesh of the cap is white and unchanging. The cap margin is not grooved. Scattered, small, irregular volval warts may be present. |
gills | The crowded, cream gills of this species may be very narrowly attached to the stem at first, but then become free. The short gills narrow gradually with the free edge following a curve. |
stem | The whitish stem of this mushroom measures about 80 × 30 mm. It is striate above attachment of a fragile, skirt-like ring that is soon lost. The stem has only a slight expansion at its base. Bas found no material from a volva on the stem. |
odor/taste | Odor and taste are unknown for this mushroom. |
spores | The spores of A. grossa sensu Aberdeen are 9.0 - 12.0 × 6.5 - 7.5 μm, broadly ellipsoid to ellipsoid to elongate, and amyloid. Clamps are present at bases of basidia. |
discussion |
Amanita grossa sensu Aberdeen was reported from Mt. Glorious in Queensland, Australia. There is no data on the ecology of that area. The reader may wish to compare this mushroom with A. grossa and other species of Bas' stirps Grossa.—R. E. Tulloss |
brief editors | RET |
name | Amanita grossa sensu Aberdeen | ||||||||
name status | sensu | ||||||||
GenBank nos. |
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revisions | Bas. 1969. Persoonia 5: 508, figs. 282-285. | ||||||||
intro |
Olive text indicates a specimen that has not been
thoroughly examined (for example, for microscopic details) and marks other places in the text
where data is missing or uncertain. The following text is based on the revision of Bas (1969). | ||||||||
pileus | from Bas (1969): 140 mm wide, dingy cream, planar; context white, unchanging; margin nonsulcate, slightly revolute; universal veil as scattered warts, small, irregularly shaped. | ||||||||
lamellae | from Bas (1969): adnexed then free, crowded, cream, ca. 10 mm broad, with whitish edge; lamellulae rounded attenuate. | ||||||||
stipe | from Bas (1969): ca. 80 × 30 mm, whitish, striate above partial veil attachment; bulb as slight basal expansion of stipe; context as in pileus; partial veil pendent, submembranous, fragile, evanescent; universal veil absent. | ||||||||
odor/taste | not recorded. | ||||||||
macrochemical tests |
none recorded. | ||||||||
pileipellis | from Bas (1969): gelatinized near surface; filamentous hyphae 3 - 8 μm wide, "with rather many refractive hyphae." | ||||||||
pileus context | not described. | ||||||||
lamella trama | not described. | ||||||||
subhymenium | not described. | ||||||||
basidia | from Bas (1969): 4-sterigmate; clamps present. | ||||||||
universal veil | from Bas (1969): On pileus: often with refractive material in ends of elements; filamentous hyphae 3 - 8 mm wide, branching; inflated cells subcylindric to ellipsoid, up to 100 × 35 μm and 65 × 55 μm, at least sometimes in [terminal] chains; vascular hyphae rather abundant. On stipe: absent. | ||||||||
stipe context | from Bas (1969): longitudinally acrophysalidic; acrophysalides abundant. | ||||||||
partial veil | from Bas (1969): not described [probably absent—ed.]. | ||||||||
lamella edge tissue | from Bas (1969): not described [probably absent—ed.] | ||||||||
basidiospores | Bas (1969): [15/1/1] 9.0 - 12.0 × 6.5 - 7.5 μm, (Q = (1.2-) 1.35 - 1.65; Q = 1.45), colorless, hyaline, thin-walled, amyloid, broadly ellipsoid to ellipsoid to elongate; apiculus not described; contents granular; color in deposit not recorded. | ||||||||
ecology | Bas (1969): no data. | ||||||||
material examined |
Bas (1969): AUSTRALIA: QUEENSLAND—Moreton Bay Region - Mt. Glorious, | ||||||||
discussion |
from Bas (1969): "The material available includes a dried sector of a nearly glabrous cap, some fragments preserved in liquid, a rather extensive description, and a rough drawing of a fruit-body. Unfortunately fragments of the volva are scarce. "The present collection from S. E. Queensland was received from Dr. J. C. Aberdeen under the name A. grossa. It appears indeed to have many characters in common with the type of that species from Tasmania. The main reason that I hesitate to identify the two collections with each other is a difference in the structure of the volval remnants on the cap. In the type of A. grossa the volva apparently consists mainly of ellipsoid to globose, often pedunculate cells intermixed with only a few oleiferous [vascular—ed.] hyphae. The few remnants of of the volva in the present collection consist of a striking number of elongate cells and many oleiferous [vascular] hyphae. "Amanita grossa has been recorded from Australia by Cleland (1934; 50) and Gilbert (1941: 383). I have not examined their material." Bas placed the present collection in his stirps Grossa. The following figure provides a sporograph comparison using the limited known data on A. grossa and the present entity: | ||||||||
citations | —R. E. Tulloss | ||||||||
editors | RET | ||||||||
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